ADFS 3 authentication looping prompt

We have installed and configured ADFS 3 with CRM 2013 as following:

1. ADFS server where ADFS 3 is installled on Windows Server 2012 R2.
2. CRM 2013 server configured for IFD installed on Windows Server 2012 R2.
3. We have an ASP.NET application uses single sign on (as the example found in CRM SDK 2011).

Case 1:

Login to ASP.NET web application, loads login form once, then open CRM without login. (Works fine)

Case 2: (problem)

Login to CRM, loads login form once, then open ASP.NET web application displays login form (repeatedly prompt for authentication).

We have attached the following two screen shots for Case 2.

We are stuck in this issue for more than 3 weeks now, we really appreciate your help.

Islam Eldemery
http://idemery.net